He has worked at the coal face for eight hours.

Through researching on coal-bearing stratum in Shuanghua coal field, the usual coal formation rules are reviewed.

通过对双桦煤田含煤地层的研究,总结出了双桦煤田的一般成煤规律.

The formation and harm of spontaneous combustion in coal field are generally described.

煤层自燃形成的煤田火区是煤矿区重要灾害之一.

Through analysis on coal formation and system, expound the change regulation of Boli coal field.

通过对含煤建造及构造体系的分析,探讨了勃利煤田的变质规律.

In Zhunnan Jurassic coal-field, the spontaneous combustion of coal very serious, and there are long history.

准南煤田侏罗系煤层自燃严重, 火烧历史悠久.

Coal field burning does great harm to coal exploring, pit building and mine opening-up.

煤田火烧区的存在,给勘探 、 建井、开矿均带来一定的危害.

The coal field at Ying-Ke Station , coal mines around Taipei area were delivered here to transfer.

莺歌车站集煤场.三峡,新店的煤产均集中在此待转.

It is important for assessing to the quality of coal correctly during coal field geological prospecting.

正确评价煤质是煤田地质勘探工作中一项极为重要的工作.

Rivers have been Chaheji, Dry River, River coal field, Long River.

河流有直岔河 、 旱泉河 、 煤场河 、 龙沟河.

There are complex structure and fold developed in Longyong coal-field.

龙永煤田构造复杂,褶曲发育.

The dual line to the rock field and coal field.

通往落煤昌场和舍石场的复线.

How much coal gas can this gas tank contain?

这个煤气包能储存多少煤气?

In order to enlarge utilization coal gas resource, tamping coking process is adopted at Nangang.

介绍了南(昌)钢公司为扩大利用焦煤资源, 采用捣固炼焦工艺.

Linqing depression is one of the favorable areas of coal gas exploration in Shengli oilfield.

临清坳陷是胜利油区煤成气的有利探区之一.

Coal gas is produced by the gasification of coal.

煤气是由煤的气化作用得到的.

The article introduced the complexity of wastewater and disposal method during coal gas production.

本文叙述了煤气生产工艺废水中杂质的复杂性及处理方法和主要步骤.

Electric tar precipitator is high purifying equipment that is applied in the cooled coal gas station.

电捕焦油器是冷煤气站采用的高效净化设备.

Coal gas resource in china is very abundant and gas reserves is the third of world.

我国煤层气资源非常丰富,储量居世界第三位.

Therefore, large amount of coal gas can be prevented from externally flowing from the burner.

从而防止了大量煤气由燃具处的外溢.

If sews did not pasted on time, coal gas would come out from the.

如果不糊上, 裂缝里就会冒出煤气.

In production and transportation process of coal gas, the coal tar has comparatively severe harmless.

煤焦油在煤气的生产、运输等过程中存在较大危害.